%0 Journal Article
%T Circadian activity pattern of giant pandas during the bamboo growing season<br>大熊猫取食竹笋期间的昼夜活动节律和强度
%A ZHANG Jindong
%A HUANG Jinyan
%A ZHOU Shiqiang
%A LI Rengui
%A LIU Dian
%A HUANG Yan
%A LI Desheng
%A XU Weihu
%A ZHANG Hemin
%A LIU Jianguo
%A OUYANG Zhiyun
%A <br>张晋东
%A 黄金燕
%A 周世强
%A 李仁贵
%A 刘巅
%A 黄炎
%A 李德生
%A 徐卫华
%A 张和民
%A 刘建国
%A 欧阳志云
%J 生态学报
%D 2011
%I 
%X Circadian activity patterns of three giant pandas were monitored using GPS collars equipped with dual-axis activity sensors during the spring umbrella bamboo growing season in Wolong Nature Reserve. We summarized activity rate (% of time active) and level (horizontal direction/ vertical direction ranging from 0 to 255) across different times of day and across individuals and compared activity level to both solar radiation and air temperature. The results showed that the mean activity rate of the pandas was 68.05%. Activity rate (70.86%) and level of the pregnant panda (23.82±0.30/ 17.63±0.22) was higher than the other two (70.55%, 14.71±0.17/ 13.52±0.15 and 62.76%, 17.74±0.23/ 13.61±0.18). There were three activity peaks at 6:00-7:00, 18:00-21:00 and 23:00-3:00, and a marked rest period at 9:00-12:00. Activity rate (68.32%) and level during the day (19.59±0.20/ 15.45±0.15) was higher than in the night (67.67%,17.63±0.19/ 14.21±0.15). The effect of solar radiation was significantly negatively and linearly related to the daily activity level of the study pandas (r=-0.822, P<0.001), however, the air temperature was not linearly related to circadian activity level.
%K Giant panda (Ailuropoda melanoleuca)
%K GPS collar
%K activity level
%K activity rhythm
%K Wolong Nature Reserve<br>大熊猫(Ailuropoda
%K melanoleuca)
%K GPS项圈
%K 活动强度
%K 活动节律
%K 卧龙自然保护区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=3F9E736FA3096F02DC8CF3D561558A5F&yid=9377ED8094509821&vid=4AD960B5AD2D111A&iid=F3090AE9B60B7ED1&sid=A808A3BE66628A26&eid=5FCE9AC7218D4C89&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=22